A reversible assembled alkaline battery module

Abstract

This utility model relates to the field of alkaline battery module technology and discloses a reversible assembled alkaline battery module, including a battery housing. Multiple battery cells are slidably connected inside the battery housing. Cable bundling mechanisms are fixedly connected to both the front and rear ends of the battery housing. A disassembly / assembly mechanism is fixedly connected to the top of each battery cell. Connecting mechanisms are fixedly connected to both the left and right sides of the battery housing. Each cable bundling mechanism includes a connecting box, and the exterior of each connecting box is fixedly connected to the front and rear ends of the battery housing. Reset components are fixedly connected to both the left and right ends of each connecting box, and sliding blocks are slidably connected to the exterior of each reset component. In this utility model, cables are passed through an arc-shaped opening and arranged according to layout requirements inside the battery housing. After arrangement, releasing the handle releases the spring's elastic potential energy, causing the relevant components to reset, closing the arc-shaped opening, and tightening the cables.

Description

Technical Field

[0001] This utility model relates to the field of alkaline battery module technology, and in particular to a reversible assembled alkaline battery module. Background Technology

[0002] An alkaline battery module refers to a battery pack formed by combining multiple alkaline batteries in a specific connection method, possessing a particular voltage, capacity, and performance. It typically includes individual battery cells, connecting components, protection circuitry, and a casing. Taking the common zinc-manganese alkaline battery as an example, multiple such battery cells connected in series or parallel, along with corresponding circuitry and a casing, constitute an alkaline battery module. In some applications, such as certain portable electronic devices and small power tools, using ordinary alkaline battery packs may require replacing the entire pack if one battery malfunctions or runs out of power, resulting in high costs. Reversible, assembled alkaline battery modules, however, allow for easy removal and replacement of damaged or depleted battery cells, thereby reducing maintenance costs and improving efficiency.

[0003] First, select the appropriate battery cells according to the equipment's power requirements, insert them into the slots as designed, and complete the assembly through series and parallel connections. Connect the module to the equipment for power supply. During operation, the built-in protection circuit monitors parameters and automatically cuts off power in case of abnormalities. When a battery cell is depleted or malfunctions, an indicator light will indicate this. Turn off the power, open the casing, remove the faulty battery, replace it with a new cell, close the casing again, and you can continue using it.

[0004] In existing technologies, some reversible assembled alkaline battery modules experience problems during use. When the equipment is running, the connecting cables between the individual battery cells within the module gradually become loose, worn, or even broken due to continuous vibration, displacement, or frequent bending of the equipment. This makes maintenance and disassembly inconvenient and reduces the lifespan of the modules. Therefore, to address these shortcomings, a reversible assembled alkaline battery module is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a reversible assembled alkaline battery module, which aims to improve the problem that some reversible assembled alkaline battery modules in the prior art suffer from cable loosening and wear due to vibration during use, thus affecting their service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A reversible assembled alkaline battery module includes a battery housing, with multiple battery cells slidably connected inside the battery housing. Wiring mechanisms are fixedly connected to both the front and rear ends of the battery housing. A disassembly / assembly mechanism is fixedly connected to the top of each battery cell. Connecting mechanisms are fixedly connected to both the left and right sides of the battery housing. Each wiring mechanism includes a connecting box, with the two connecting boxes respectively fixedly connected to the front and rear ends of the battery housing. Reset components are fixedly connected to both the left and right ends of each connecting box. A sliding block is slidably connected to the outside of each reset component. An opening block is fixedly connected to the top side of each sliding block. A rotating plate is rotatably connected inside each opening block. Concave plates are rotatably connected to adjacent ends of the two rotating plates. Cover plates are fixedly connected to the top sides of the two concave plates. A status indicator ring is fixedly connected to the middle of the battery housing via a bearing.

[0008] Through the above technical solution: the battery box serves as the core carrier, providing placement space and protection for individual battery cells; the cable management mechanism is fixed at the front and rear ends of the box to organize the cables; the disassembly and assembly mechanism at the top of the individual battery cells facilitates connection between cells; the connection mechanisms on the left and right sides enable electrical connection between cells; and the status indicator ring can intuitively reflect the pressure changes inside the box. All mechanisms work together to make the battery module both practical and stable.

[0009] As a further description of the above technical solution:

[0010] Each of the reset components includes a guide rod, and the exterior of two of the guide rods is fixedly connected to the interior of the left and right ends of the battery box, respectively. A spring is sleeved on the exterior of each guide rod.

[0011] Through the above technical solution: the guide rod is fixed inside the left and right ends of the battery box to provide stable support for the spring, so that the spring can be evenly stressed when it is sleeved on the outside, laying the foundation for the function of the reset component and ensuring that it can cooperate with the sliding block to achieve the reset function.

[0012] As a further description of the above technical solution:

[0013] The two springs are fixedly connected to the inner walls of the left and right ends of the connecting box, respectively, with their opposite ends fixedly connected to the adjacent sides of the two sliding blocks.

[0014] The above technical solution involves connecting the two ends of the spring to the inner wall of the connecting box and the sliding block, respectively. When the sliding block slides and compresses the spring, the spring stores elastic potential energy. When the sliding block loses external force, it releases the potential energy and pushes the sliding block to reset.

[0015] As a further description of the above technical solution:

[0016] The exterior of the two sliding blocks is slidably connected to the interior of the left and right ends of the connecting box, respectively, and the exterior of the two opening blocks is slidably connected to the interior of the left and right ends of the connecting box, respectively.

[0017] Through the above technical solution, the sliding block and the opening block slide inside the connecting box, and the limiting effect of the connecting box makes their sliding stable.

[0018] As a further description of the above technical solution:

[0019] The top side of the connecting box has multiple arc-shaped openings, and a handle is fixedly connected to the top side of the cover plate.

[0020] The above technical solution allows for the placement of cables through an arc-shaped opening on the top side of the connection box, and a handle on the top side of the cover for easy operation. Pulling the handle causes the cover to slide, thereby controlling the opening and closing of the arc-shaped opening, which allows for flexible arrangement and fixation of cables, facilitating cable management.

[0021] As a further description of the above technical solution:

[0022] Each of the aforementioned disassembly and assembly mechanisms includes two dovetail protrusions. The bottom sides of the two dovetail protrusions are fixedly connected to the top left end of the battery cell. The top right end of the dovetail protrusions is fixedly connected to a mortise groove, and a copper sheet is fixedly connected inside the mortise groove.

[0023] The above technical solution, with its matching design of dovetail protrusion and mortise groove, ensures sufficient locking torque when connecting battery cells, making the cell connection stable. The copper sheet in the mortise groove forms a parallel conductive circuit with the battery cell electrode, ensuring stable current transmission and improving the conductivity of the battery module.

[0024] As a further description of the above technical solution:

[0025] Each of the multiple connecting mechanisms includes elastic silicone. The left and right sides of the battery cell are respectively fixedly connected to the adjacent sides of two elastic silicones. A round hole is opened on the top side of the elastic silicone, and gallium indium tin alloy is stored inside the elastic silicone.

[0026] Through the above technical solution, the elastic silicone is bonded and fixed to the battery cell. When the gallium indium tin alloy stored inside is squeezed, it overflows through the round hole to form a bridging channel, realizing the electrical connection between the battery cells. The fluorosilicone rubber with a Shore hardness of 40A has both elasticity and sealing properties, ensuring the reliability and stability of the electrical connection.

[0027] As a further description of the above technical solution:

[0028] The top side of the connecting box is in contact with the bottom side of the cover plate, and the outside of the guide rod is slidably connected to the inside of the sliding block.

[0029] The above technical solution connects the top side of the connecting box to the bottom side of the cover plate, allowing the arc-shaped opening to provide a stable space for the cable. The guide rod slides inside the sliding block, providing guidance for the sliding block and preventing it from deviating during the sliding process.

[0030] This utility model has the following beneficial effects:

[0031] 1. In this utility model, the opening block drives the sliding block to slide and squeeze the spring, which in turn applies a force in the opposite direction to the cover plate to reset it. Then, the cable is passed through the arc-shaped opening and arranged in the battery box according to the layout requirements. After the arrangement is completed, the handle is released, the spring releases its elastic potential energy, drives the relevant components to reset, closes the arc-shaped opening, and tightens the cable.

[0032] 2. In this utility model, the dovetail tenon and mortise joint is used in conjunction with liquid metal bridging and copper sheet conductivity to reduce resistance and stabilize power supply. The 15° tenon angle, the engagement depth of more than 5mm and the torque of 3N・m ensure a stable connection. The liquid metal contacts are adaptable to deviations, easy to replace and reduce maintenance costs. The status indicator ring is linked with the air pressure sensor, and 20kPa corresponds to 30° rotation, realizing intuitive monitoring of power status and improving the convenience and safety of use. Attached Figure Description

[0033] Figure 1 This is a perspective view of a reversible assembled alkaline battery module proposed in this utility model.

[0034] Figure 2 This is a schematic diagram of the connection box for a reversible assembled alkaline battery module proposed in this utility model.

[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0036] Figure 4 This is a schematic diagram of the elastic silicone structure of a reversible assembled alkaline battery module proposed in this utility model.

[0037] Legend:

[0038] 1. Battery casing; 2. Individual battery cells;

[0039] 3. Wire harness mechanism; 31. Connecting box; 32. Arc-shaped opening; 33. Reset assembly; 3301. Guide rod; 3302. Spring; 34. Sliding block; 35. Opening block; 36. Rotating plate; 37. Concave plate; 38. Cover plate; 39. Handle;

[0040] 4. Assembly / disassembly mechanism; 41. Dovetail tenon protrusion; 42. Mortise and tenon groove; 43. Copper sheet;

[0041] 5. Connecting mechanism; 51. Elastic silicone; 52. Round hole;

[0042] 6. Bearing; 7. Status indicator ring. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] Reference Figures 1 to 3 This utility model provides an embodiment of a reversible assembled alkaline battery module, including a battery housing 1, which provides a bearing space. Multiple battery cells 2 are slidably connected inside the battery housing 1. The battery housing 1 provides space for placing the multiple battery cells 2 and protects the battery cells 2. Both the front and rear ends of the battery housing 1 are fixedly connected to a cable management mechanism 3, which is used to manage the cables. Both cable management mechanisms 3 include a connecting box 31. The battery housing 1 is used to support the battery cells. The two connecting boxes 31 are fixedly connected to the front and rear ends of the battery housing 1 respectively and are fixed by welding process, thereby providing support for the connecting boxes 31. Multiple arc-shaped openings 32 are opened on the top side of the connecting box 31 to provide space for cable support. Both the left and right ends of the connecting box 31 are fixedly connected to a reset component 33.

[0045] Specifically, the battery housing 1 provides a carrying space, and multiple battery cells 2 are slidably connected inside it. This not only provides a place for the battery cells 2, but also protects them. Both the front and rear ends of the battery housing 1 are fixedly connected to cable management mechanisms for organizing cables. Both cable management mechanisms include connecting boxes 31. The battery housing 1 is used for support and connection. The two connecting boxes 31 are fixedly connected to the front and rear ends of the battery housing 1 respectively, and are fixed by welding process, thereby providing support for the connecting boxes 31. Multiple arc-shaped openings 32 are opened on the top side of the connecting boxes 31 to provide space for cable support.

[0046] Multiple reset components 33 each include guide rods 3301. Two guide rods 3301 are respectively fixedly connected to the left and right ends of the battery housing 1 via welding, providing support for the guide rods 3301. Springs 3302 are sleeved on the outside of the guide rods 3301, ensuring even force distribution. The adjacent sides of the two springs 3302 are respectively fixedly connected to the inner walls of the left and right ends of the connecting box 31, ensuring even force distribution. A sliding block 3 is slidably connected to the outside of the reset component 33. 4. The two sliding blocks 34 are slidably connected to the left and right ends of the connecting box 31 respectively. The connecting box 31 restricts the sliding blocks 34 so that they can slide stably. The far sides of the two springs 3302 are fixedly connected to the near sides of the two sliding blocks 34 respectively. When the sliding blocks 34 slide, they will compress the springs 3302, so that the springs 3302 can store elastic potential energy and then give the sliding blocks 34 a force in the opposite direction to reset. The guide rod 3301 is slidably connected to the inside of the sliding blocks 34. The guide rod 3301 provides guidance for the sliding of the sliding blocks 34 and prevents deviation.

[0047] Specifically, the guide rod 3301 is welded and fixed inside the left and right ends of the battery box 1 to provide support for itself. A spring 3302 is sleeved on the outside of the guide rod 3301 to restrict the spring 3302 so that it is evenly stressed. The two springs 3302 are fixed to the inner walls of the left and right ends of the connecting box 31 on the side closer to each other to ensure that the springs 3302 are evenly stressed. The reset component 33 is externally slidably connected to the sliding block 34. The two sliding blocks 34 slide inside the left and right ends of the connecting box 31 respectively. The sliding is stable by the restriction of the connecting box 31. The two springs 3302 are fixed to the side closer to each other on the side closer to each other. When the sliding block 34 slides, it compresses the spring 3302 to store elastic potential energy. The spring 3302 then applies a force in the opposite direction to the sliding block 34 to achieve reset. The guide rod 3301 slides inside the sliding block 34 to guide the sliding of the sliding block 34 and prevent it from deviating.

[0048] An opening block 35 is fixedly connected to the top side of the sliding block 34 by welding, thus providing support for the opening block 35. The two opening blocks 35 are slidably connected to the left and right ends of the connecting box 31, respectively. The connection box 31 restricts the opening blocks 35 to slide stably. A rotating plate 36 is rotatably connected inside the opening block 35. The rotating plate 36 drives the opening block 35 to slide during rotation. A concave plate 37 is rotatably connected to the adjacent ends of the two rotating plates 36. The concave plate 37 guides the opening blocks 35 to slide. The slide is upward, which then drives the rotating plate 36 to rotate. The top sides of the two concave plates 37 are fixedly connected to the cover plate 38, which is fixed by welding. This allows the cover plate 38 to drive the concave plates 37 to slide. The top side of the connecting box 31 contacts the bottom side of the cover plate 38. Through the contact between the connecting box 31 and the cover plate 38, the arc-shaped opening 32 can provide space for the cable. The top side of the cover plate 38 is fixedly connected to the handle 39, which is fixed by welding. This allows the cover plate 38 to slide when the handle 39 is gripped and a pulling force is applied.

[0049] Specifically, the top side of the sliding block 34 is fixedly connected to the opening block 35 by welding, providing support for the opening block 35. The two opening blocks 35 slide inside the left and right ends of the connecting box 31, and the connection box 31 restricts the sliding. The opening block 35 is rotatably connected to the rotating plate 36. The rotation of the rotating plate 36 can drive the opening block 35 to slide. The two rotating plates 36 are rotatably connected to the concave plate 37 at their near ends. The concave plate 37 can drive the rotating plate 36 to rotate by sliding upward. The top sides of the two concave plates 37 are fixedly connected to the cover plate 38 by welding, so that the cover plate 38 can drive the concave plate 37 to slide. The top side of the connecting box 31 is in contact with the bottom side of the cover plate 38, so that the arc-shaped opening 32 can provide space for the cable. The top side of the cover plate 38 is fixedly connected to the handle 39 by welding. Holding the handle 39 and applying a pulling force can drive the cover plate 38 to slide.

[0050] Reference Figure 1 and Figure 4 The top of the battery cell 2 is fixedly connected to a disassembly and assembly mechanism 4. Each disassembly and assembly mechanism 4 includes two dovetail protrusions 41. The inclination angle of the dovetail protrusions 41 is designed to be 15 degrees. The bottom side of the two dovetail protrusions 41 is fixedly connected to the top left side of the battery cell 2 and fixed by welding process, thereby providing support for the dovetail protrusions 41. The top right side of the dovetail protrusions 41 is fixedly connected to a mortise groove 42. The dovetail protrusions 41 and the mortise groove 42 are adapted to each other, and the engagement depth is greater than 5 mm to ensure that sufficient locking torque can be generated when multiple battery cells 2 are connected to each other. A copper sheet 43 is fixedly connected inside the mortise groove 42. C1100 oxygen-free copper is selected with a thickness of 0.8 mm and the surface is nickel-plated to ensure good conductivity and corrosion resistance. At the same time, the copper sheet 43 and the electrode of the battery cell 2 form a parallel conductive circuit to ensure stable current transmission.

[0051] Specifically, the top of the battery cell 2 is fixedly connected to the disassembly and assembly mechanism 4. Each disassembly and assembly mechanism 4 includes two dovetail protrusions 41 with an inclination angle of 15 degrees. The bottom sides of the two dovetail protrusions 41 are welded to the top left side of the battery cell 2 to provide support for the dovetail protrusions 41. The top right side of the dovetail protrusions 41 is fixedly connected to the mortise groove 42, and the dovetail protrusions 41 and the mortise groove 42 are matched with each other with a meshing depth of more than 5 mm to ensure that sufficient locking torque is generated when multiple battery cells 2 are connected to each other. The inside of the mortise groove 42 is fixedly connected to a copper sheet 43, which is made of C1100 oxygen-free copper with a thickness of 0.8 mm and a nickel-plated surface to ensure good conductivity and corrosion resistance. The copper sheet 43 and the electrodes of the battery cell 2 form a parallel conductive circuit to ensure stable current transmission.

[0052] The battery housing 1 is fixedly connected to the left and right sides with connecting mechanisms 5. Each connecting mechanism 5 includes an elastic silicone rubber 51. The elastic silicone rubber 51 is made of fluorosilicone rubber with a Shore hardness of 40A, which has good elasticity and sealing performance. The left and right sides of the battery cell 2 are respectively fixedly connected to the adjacent side of two elastic silicone rubbers 51 and fixed by an adhesive process, thereby providing support for the elastic silicone rubber 51. A round hole 52 is opened on the top side of the elastic silicone rubber 51, so that the internal cavity of the elastic silicone rubber 51 communicates with the round hole 52. The interior of the elastic silicone rubber 51 stores gallium indium tin alloy. Squeezing the elastic silicone rubber 51 causes the conductive material gallium indium tin alloy to overflow and form a bridging path, thereby realizing the electrical connection between the battery cells 2. A status indicator ring 7 is fixedly connected to the middle of the battery housing 1 through a bearing 6. Every 20 kPa pressure change drives the status indicator ring 7 to rotate 30 degrees.

[0053] Specifically, the left and right sides of the battery housing 1 are fixedly connected by mechanisms 5. Each of the multiple connection mechanisms 5 includes elastic silicone rubber 51, which is made of fluorosilicone rubber with a Shore hardness of 40A, and has good elasticity and sealing performance. The left and right sides of the battery cell 2 are fixed to the adjacent side of two elastic silicone rubbers 51 by an adhesive process, providing support for the elastic silicone rubbers 51. A round hole 52 is opened on the top side of the elastic silicone rubber 51, so that the internal cavity of the elastic silicone rubber 51 is connected to the round hole 52. The elastic silicone rubber 51 stores gallium indium tin alloy. Squeezing the elastic silicone rubber 51 can cause the gallium indium tin alloy to overflow and form a bridging path to realize the electrical connection between the battery cells 2. The middle part of the battery housing 1 is fixedly connected to the status indicator ring 7 through the bearing 6. Every 20 kPa pressure change can drive the status indicator ring 7 to rotate 30 degrees.

[0054] Working principle: Align the dovetail protrusions 41 of the battery cells 2 with the marking lines of the corresponding mortise grooves 42, apply a 50N thrust along the axial direction, and guide the battery cells 2 axially with the dovetail protrusions 41 at a 15-degree angle. The elastic silicone 51 is squeezed to make the gallium indium tin alloy stored inside overflow from the round hole 52, forming a bridging path between the battery cells to achieve electrical connection. At the same time, the dovetail protrusions 41 and the mortise grooves 42 are fully engaged with a depth of ≥5mm, generating a locking torque of 3N·m. Then, the copper sheet 43 made of C1100 oxygen-free copper with a nickel-plated surface in the mortise grooves 42 forms a parallel conductive circuit with the electrodes of the battery cells 2 to ensure stable current transmission. After installation, observe the status indicator ring 7 connected to the middle of the battery box 1 by the bearing 6. If the green area reaches the specified scale, it indicates that the battery cells 2 are installed and connected normally.

[0055] When it is necessary to organize the cables, grasp the handle 39 on the top side of the cover plate 38 and apply a pulling force to make the cover plate 38 slide upward. Then, the concave plate 37 slides and the rotating plate 36 rotates, thereby causing the opening block 35 to slide. The opening block 35 drives the sliding block 34 to slide and squeeze the spring 3302, which in turn gives the cover plate 38 a force in the opposite direction to reset it. Then, pass the cable through the arc-shaped opening 32 and organize and arrange it in the battery box 1 according to the layout requirements. After the organization is completed, release the handle 39. The spring 3302 releases its elastic potential energy, drives the relevant components to reset, closes the arc-shaped opening 32, and tightens the cable.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reversibly assembled alkaline battery module comprising a battery case (1), characterized in that: Multiple battery cells (2) are slidably connected inside the battery box (1). A wire harness mechanism (3) is fixedly connected to both the front and rear ends of the battery box (1). A disassembly and assembly mechanism (4) is fixedly connected to the top of the battery cell (2). A connection mechanism (5) is fixedly connected to both the left and right sides of the battery box (1). A status indicator ring (7) is fixedly connected to the middle of the battery box (1) through a bearing (6). Both of the wire harness mechanisms (3) include a connecting box (31). The two connecting boxes (31) are fixedly connected to the front and rear ends of the battery box (1) respectively. The left and right ends of the connecting boxes (31) are fixedly connected to a reset assembly (33). The reset assembly (33) is slidably connected to a sliding block (34). The top side of the sliding block (34) is fixedly connected to an opening block (35). The opening block (35) is rotatably connected to a rotating plate (36). The two rotating plates (36) are rotatably connected to concave plates (37) at their adjacent ends. The top sides of the two concave plates (37) are fixedly connected to a cover plate (38).

2. The reversibly assembled alkaline battery module of claim 1, wherein: Each of the reset components (33) includes a guide rod (3301), and the exterior of two guide rods (3301) is fixedly connected to the interior of the left and right ends of the battery box (1), respectively. A spring (3302) is sleeved on the exterior of the guide rod (3301).

3. The reversibly assembled alkaline battery module of claim 2, wherein: The two springs (3302) are fixedly connected to the inner walls of the left and right ends of the connecting box (31) on their adjacent sides, and the two springs (3302) are fixedly connected to the adjacent sides of the two sliding blocks (34) on their distant sides.

4. The reversibly assembled alkaline battery module of claim 1, wherein: The exterior of the two sliding blocks (34) is slidably connected to the interior of the left and right ends of the connecting box (31), and the exterior of the two opening blocks (35) is slidably connected to the interior of the left and right ends of the connecting box (31).

5. The reversibly assembled alkaline battery module of claim 1, wherein: The top side of the connecting box (31) is provided with multiple arc-shaped openings (32), and the top side of the cover plate (38) is fixedly connected with a handle (39).

6. The reversibly assembled alkaline battery module of claim 1, wherein: Each of the multiple disassembly and assembly mechanisms (4) includes two dovetail protrusions (41). The bottom side of the two dovetail protrusions (41) is fixedly connected to the top left end of the battery cell (2). The top right end of the dovetail protrusion (41) is fixedly connected to a mortise groove (42). A copper sheet (43) is fixedly connected inside the mortise groove (42).

7. The reversibly assembled alkaline battery module of claim 1, wherein: Each of the multiple connecting mechanisms (5) includes an elastic silicone (51). The left and right sides of the battery cell (2) are respectively fixedly connected to the adjacent sides of the two elastic silicones (51). A round hole (52) is opened on the top side of the elastic silicone (51). Gallium indium tin alloy is stored inside the elastic silicone (51).

8. The reversibly assembled alkaline battery module of claim 3, wherein: The top side of the connecting box (31) is in contact with the bottom side of the cover plate (38), and the outside of the guide rod (3301) is slidably connected to the inside of the sliding block (34).

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